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Cancun climate talks

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Hundreds of international supporters gather on an island on the Belizian Barrier Reef off the coast of Belize City, on Nov. 13. to form a human banner asking if the end is near for Belize and other endangered coral reefs around the world. The action was on the final day of the three-day Belize Reef summit which urged global leaders to take strong action at the upcoming United Nations climate talks in Cancun, Mexico. Newscom

Environmental organization Greenpeace flies a hot air balloon with the messages 'Rescue the Climate' and 'Stop Global Warming' over the ruins of the ancient Mayan city of Chichen Itza, as delegates prepare to meet for UN climate negotiations in nearby Cancun on Nov. 28. Reuters

A mangrove plant grows on a shore in Cancun on June 21. In the 40 years since Cancun was founded, countless acres of mangrove forests up and down Mexico's Caribbean Coast have been lost – and the destruction continues. Now many scientists say that mangrove forests can help slow climate change, and are desperate to save them. Gerardo Garcia/Reuters

Soldiers lead a convoy of armored personnel carriers while patrolling the area surrounding the venue of climate talks in Cancun on Nov. 29. UN climate talks with almost 200 nations are starting in Cancun to discuss steps to combat climate change after a summit in Denmark in 2009 came up with only a nonbinding Copenhagen Accord. Gerardo Garcia/Reuters

Oxfam activists carry a giant bottle on the shores of a beach in Cancun on Nov. 28. The bottle contains a message reading 'Urgent: Save Lives in Cancun,' in reference to millions of world's poorest people. Mexico will host international climate change talks among almost 200 nations meeting in Cancun from Nov. 29 to Dec. 10. Reuters

Campaigners and farmers hold placards displaying the symbols of international currencies during a campaign urging world leaders to fulfill their promises on the global climate fund at Democracy Square in Phnom Penh, Cambodia, on Nov. 29. Over 300 campaigners gathered as international climate talks opened on Monday in Cancun, Mexico. Chor Sokunthea/Reuters

An activist calling for saving the planet attends a rally outside the venue of the UN Climate Change Conference in Cancun, Mexico, on Nov. 29. David de la Paz/Xinhua/Newscom

Activists calling for saving the planet hold a rally outside the venue of the UN Climate Change Conference in Cancun, Mexico, on Nov. 29. David de la Paz/Xinhua/Newscom

Mexico's President Felipe Calderon (l.) presses the button to start a wind turbine that is planned to help power the UN Climate Change Conference in Cancun, Mexico, on Nov. 28. Israel Leal/AP

The 102-foot-long solar-powered Turanor PlanetSolar sits at dock in Miami Beach near downtown Miami on Nov. 29. The vessel will continue on its round-the-Globe expedition to Cancun in time for the World Climate Conference. The boat was built with the goal of circumnavigating the globe without burning gasoline. J. Pat Carter/AP